如何从动态更新的网页中提取数据

时间:2019-01-10 15:29:08

标签: javascript python selenium-webdriver xpath webdriverwait

我想从丝芙兰网站上刮取评论。评论是动态更新的。

检查后,我发现评论在HTML代码中。

[[(Integer, Integer)]]

我想编写python硒代码以阅读评论。

我写的代码在这里...

<div class="css-eq4i08 " data-comp="Ellipsis Box">Honestly I never write 
reviews but this is a must if you have frizzy after even after straightening 
it! It smells fantastic and it works wonders definitely will be restocking once 
I’m done this one !!</div>

如果我写from selenium import webdriver chrome_path = (r"C:/Users/Connectm/Downloads/chromedriver.exe") driver = webdriver.Chrome(chrome_path) driver.implicitly_wait(20) driver.get("https://www.sephora.com/product/crybaby-coconut-oil-shine-serum-P439093?skuId=2122083&icid2=just%20arrived:p439093") reviews = driver.find_element_by_xpath('//*[@id="ratings-reviews"]/div[4]/div[2]/div[2]/div[1]/div[3][@data-comp()='Elipsis Box']) print(reviews.text) ,那我就空白了。

什么是最佳选择?

我正在尝试使用带有属性的xpath。该代码不起作用。 有人请帮我什么是最好的解决方案?

1 个答案:

答案 0 :(得分:1)

要从丝芙兰网站上刮取评论,您必须诱使 WebDriverWait 使元素可见,并且可以使用以下解决方案:

  • 代码块:

    from selenium import webdriver
    from selenium.webdriver.common.by import By
    from selenium.webdriver.support.ui import WebDriverWait
    from selenium.webdriver.support import expected_conditions as EC
    
    options = webdriver.ChromeOptions()
    options.add_argument("start-maximized")
    options.add_argument("disable-infobars")
    options.add_argument("--disable-extensions")
    driver = webdriver.Chrome(chrome_options=options, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')
    driver.get("https://www.sephora.com/product/crybaby-coconut-oil-shine-serum-P439093?skuId=2122083&icid2=just%20arrived:p439093")
    driver.execute_script("arguments[0].scrollIntoView(true);", WebDriverWait(driver,20).until(EC.visibility_of_element_located((By.XPATH, "//div[@id='tabpanel0']/div//b[contains(., 'What Else You Need to Know')]"))))
    reviews = WebDriverWait(driver,20).until(EC.visibility_of_all_elements_located((By.XPATH, "//div[@data-comp='GridCell Box']//div[@data-comp='Ellipsis Box']")))
    for review in reviews:
        print(review.get_attribute("innerHTML"))
    
  • 控制台输出:

    Honestly I never write reviews but this is a must if you have frizzy after even after straightening it! It smells fantastic and it works wonders definitely will be restocking once I’m done this one !!
    I really like this product. I was looking for something to tame frizz and fly aways during the winter and this does the job. At first I was nervous it might give a greasy look but it makes my hair smooth and soft. Scent is actually a little subtle for me, but still nice.
    This oil-serum is perfect for the right level of hydration without the feel of oil residue. Great for all hair types and my new go-to product.
    I LOVE how weightless this oil feels in my hair.. takes away all of my flyaways without looking of feeling greasy.. the packaging is COOL (travel-friendly) and it smells wonderful!!
    I tried this when it first dropped on their website. I’ve been using it for about 3 weeks now. And I have to say its just OKAY. Nothing super special about it. I haven’t noticed super smooth hair that isn’t given with other products that cost less. It’s just like any other smoothing serum. I also can’t figure out what the smell is. It doesn’t really smell as pleasant as their other products.
    in love!! A tiny bit goes a long way. No more fly aways. No more frizz from touch or environment.